Power plants in Contra Costa County, California
40 operating power plants in Contra Costa County, California, with 4,240 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Largest power plants in Contra Costa County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | Delta Energy CenterNatural gas | 944 | 4,138 | 50.1% |
| 2 | Marsh Landing Generating StationNatural gas | 828 | 15.7 | 0.2% |
| 3 | Los Medanos Energy CenterNatural gas | 678 | 2,486 | 41.8% |
| 4 | Gateway Generating StationNatural gas | 620 | 2,912 | 53.6% |
| 5 | Crockett Cogen ProjectNatural gas | 247 | 1,275 | 58.9% |
| 6 | Diablo Energy StorageBattery storage | 200 | −35.9 | – |
| 7 | Richmond CogenNatural gas | 174 | 970 | 63.8% |
| 8 | Marathon Bay Area CogenNatural gas | 114 | 585* | 64.3% |
| 9 | Martinez RefiningNatural gas | 100 | 734 | 83.8% |
| 10 | Vasco WindsWind | 78 | 215 | 31.4% |
| 11 | Phillips 66 Rodeo RefineryNatural gas | 55 | 0.0 | – |
| 12 | Riverview Energy CenterNatural gas | 47 | 12.3 | 3.0% |
| 13 | Buena Vista Energy LLCWind | 38 | 96.1 | 28.9% |
| 14 | P66 Rodeo SolarSolar | 30 | 37.0* | 18.6% |
| 15 | Columbia Solar Energy, LLCSolar | 19 | 11.9 | 7.1% |
| 16 | Marin Clean Energy Solar OneSolar | 11 | 21.2 | 23.1% |
| 17 | C&H Sugar PlantOther fuels | 8.0 | 42.5 | 60.7% |
| 18 | Byron Highway SolarSolar | 5.0 | 12.0 | 27.4% |
| 19 | Bear Creek Solar (Orinda)Solar | 5.0 | 7.4 | – |
| 20 | Martinez Sulfuric Acid Regeneration PltOther fuels | 4.0 | 13.4 | 38.3% |
| 21 | Ameresco Keller CanyonLandfill gas | 3.8 | 15.8 | 47.5% |
| 22 | CCCSD Wastewater Treatment PlntNatural gas | 3.5 | 20.0* | 71.3% |
| 23 | Nove Power PlantLandfill gas | 3.0 | 0.0 | – |
| 24 | Bishop Ranch - BR 2600Solar and battery storage | 2.8 | 0.8 | – |
| 25 | Bio-RadSolar | 2.3 | 3.2 | 15.7% |
| 26 | CA Dept of Public Health at RichmondSolar | 2.2 | 4.0 | 20.5% |
| 27 | Central SanSolar | 1.8 | 3.0 | – |
| 28 | Bishop Ranch - BR 1-YSolar and battery storage | 1.8 | 1.7 | 17.2% |
| 29 | Oakley Solar ProjectSolar | 1.5 | 2.1 | 16.3% |
| 30 | Bishop Ranch - BR 8-PSolar and battery storage | 1.5 | 1.3 | – |
| 31 | Bishop Ranch - BR 8-OSolar and battery storage | 1.5 | 1.4 | – |
| 32 | Kaiser Deer Valley Rd. Fuel CellNatural gas | 1.4 | 10.9 | 88.7% |
| 33 | Bishop Ranch BR 1-XSolar and battery storage | 1.4 | 1.5 | 19.1% |
| 34 | CSD 2 - Heritage HighSolar | 1.3 | 1.7 | 15.2% |
| 35 | Bishop Ranch - BR 8-QSolar and battery storage | 1.2 | 0.9 | – |
| 36 | Bishop Ranch - BR 15-AASolar and battery storage | 1.2 | 0.8 | – |
| 37 | Bishop Ranch - BR 15-CCSolar and battery storage | 1.2 | 1.0 | – |
| 38 | Bishop Ranch - BR 15-DDSolar and battery storage | 1.1 | 0.1 | – |
| 39 | California PV Energy at ISD WWTPSolar | 1.0 | 1.9 | 21.9% |
| 40 | CSD 2- Freedom HighSolar | 0.9 | 1.3 | 17.0% |
* Fewer than 12 months of 2025 reported, so the total is partial.
MW is the nameplate capacity of operating generators and batteries. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources
More power plant lists for California
Largest power plants in California50 plants · 40,214 MWSolar farms in California974 plants · 25,484 MWWind farms in California110 plants · 6,461 MWBattery storage projects in California272 projects · 16,093 MWNatural gas power plants in California291 plants · 39,653 MWHydroelectric power plants in California209 plants · 9,614 MW
Other counties in California
Kern County257 plants · 18,580 MWLos Angeles County238 plants · 13,695 MWSan Bernardino County123 plants · 7,037 MWRiverside County119 plants · 11,454 MWSan Diego County103 plants · 5,002 MWFresno County100 plants · 5,685 MWImperial County71 plants · 4,430 MWSacramento County62 plants · 1,746 MWTulare County60 plants · 1,393 MW